How to Submit Files Larger Than 2GB for False Positive Analysis?

This article applies to all OPSWAT product releases deployed on Windows and Linux systems.

Issue: My OPSWAT Portal enforces a 2GB maximum file size for False Detection Reports (FDRs), which prevents customers from submitting larger files (e.g., 9.5GB ISOs) for analysis through the standard portal.

Resolution: Customers have two main options for submitting files larger than 2GB for false positive analysis:

Option 1: Submit Only the Relevant Suspicious Files (Recommended)

  • Extract the specific file(s) flagged as false positives.
  • Verify each extracted file is under 2GB.
  • Submit these through the standard False Detection Report portal.

Option 2: Request Manual Processing via Support Case

  • Submit the FDR form as usual.
  • After submitting the form, a support case will be automatically created.
  • Click the Case No. to access case details
  • Upload the complete large file under “Files & CC’s” tab OR share a downloadable link in the Comment box.
  • Clearly note "File exceeds 2GB limit - requesting manual FDS2 analysis".
  • Include detection details (engine name, hash, scan results).

Workarounds:

  • Split archives using tools like 7-Zip or WinRAR if upload fails at 2GB.

Prevention:

  • Always check file size before submission.
  • Do not upload infected files or any files suspected of containing malware when submitting support cases.
  • For ISOs/containers: Extract only the flagged components.
  • Include supplemental data: File hashes (SHA-256/MD5), Context about the file's purpose and safety.
  • Compress when possible: Use ZIP/7z for smaller uploads.

If Further Assistance is required, please proceed to log a support case or chatting with our support engineer.
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How to Submit Files Larger Than 2GB for False Positive Analysis?